The struct GraphNode stores an instruction in the trace file. More...

Public Types
typedef std::array< NodeSeqNum, maxRobDep >	RobDepArray
	Typedef for the array containing the ROB dependencies. More...

typedef std::array< NodeSeqNum, TheISA::MaxInstSrcRegs >	RegDepArray
	Typedef for the array containing the register dependencies. More...

Public Member Functions
bool	isLoad () const
	Is the node a load. More...

bool	isStore () const
	Is the node a store. More...

bool	isComp () const
	Is the node a compute (non load/store) node. More...

void	clearRegDep ()
	Initialize register dependency array to all zeroes. More...

void	clearRobDep ()
	Initialize register dependency array to all zeroes. More...

bool	removeRegDep (NodeSeqNum reg_dep)
	Remove completed instruction from register dependency array. More...

bool	removeRobDep (NodeSeqNum rob_dep)
	Remove completed instruction from order dependency array. More...

bool	removeDepOnInst (NodeSeqNum done_seq_num)
	Check for all dependencies on completed inst. More...

bool	isStrictlyOrdered () const
	Return true if node has a request which is strictly ordered. More...

void	writeElementAsTrace () const
	Write out element in trace-compatible format using debug flag TraceCPUData. More...

std::string	typeToStr () const
	Return string specifying the type of the node. More...

Public Attributes
NodeSeqNum	seqNum
	Instruction sequence number. More...

NodeRobNum	robNum
	ROB occupancy number. More...

RecordType	type
	Type of the node corresponding to the instruction modelled by it. More...

Addr	physAddr
	The address for the request if any. More...

Addr	virtAddr
	The virtual address for the request if any. More...

uint32_t	asid
	The address space id which is set if the virtual address is set. More...

uint32_t	size
	Size of request if any. More...

Request::Flags	flags
	Request flags if any. More...

Addr	pc
	Instruction PC. More...

RobDepArray	robDep
	Array of order dependencies. More...

uint8_t	numRobDep
	Number of order dependencies. More...

uint64_t	compDelay
	Computational delay. More...

RegDepArray	regDep
	Array of register dependencies (incoming) if any. More...

uint8_t	numRegDep
	Number of register dependencies. More...

std::vector< GraphNode * >	dependents
	A vector of nodes dependent (outgoing) on this node. More...

Static Public Attributes
static const uint8_t	maxRobDep = 2
	The maximum no. More...

Detailed Description

The struct GraphNode stores an instruction in the trace file.

The format of the trace file favours constructing a dependency graph of the execution and this struct is used to encapsulate the request data as well as pointers to its dependent GraphNodes.

Definition at line 578 of file trace_cpu.hh.

Member Typedef Documentation

typedef std::array<NodeSeqNum, TheISA::MaxInstSrcRegs> TraceCPU::ElasticDataGen::GraphNode::RegDepArray

Typedef for the array containing the register dependencies.

Definition at line 592 of file trace_cpu.hh.

typedef std::array<NodeSeqNum, maxRobDep> TraceCPU::ElasticDataGen::GraphNode::RobDepArray

Typedef for the array containing the ROB dependencies.

Definition at line 589 of file trace_cpu.hh.

Member Function Documentation

void TraceCPU::ElasticDataGen::GraphNode::clearRegDep ( )

Initialize register dependency array to all zeroes.

Definition at line 1413 of file trace_cpu.cc.

Referenced by TraceCPU::ElasticDataGen::InputStream::read().

void TraceCPU::ElasticDataGen::GraphNode::clearRobDep ( )

Initialize register dependency array to all zeroes.

Definition at line 1421 of file trace_cpu.cc.

Referenced by TraceCPU::ElasticDataGen::InputStream::read().

bool TraceCPU::ElasticDataGen::GraphNode::isComp ( ) const

inline

Is the node a compute (non load/store) node.

Definition at line 653 of file trace_cpu.hh.

References type.

bool TraceCPU::ElasticDataGen::GraphNode::isLoad ( ) const

inline

Is the node a load.

Definition at line 647 of file trace_cpu.hh.

References type.

Referenced by TraceCPU::ElasticDataGen::executeMemReq(), TraceCPU::ElasticDataGen::HardwareResource::isAvailable(), TraceCPU::ElasticDataGen::HardwareResource::occupy(), and TraceCPU::ElasticDataGen::HardwareResource::release().

bool TraceCPU::ElasticDataGen::GraphNode::isStore ( ) const

inline

Is the node a store.

Definition at line 650 of file trace_cpu.hh.

References type.

Referenced by TraceCPU::ElasticDataGen::HardwareResource::isAvailable(), TraceCPU::ElasticDataGen::HardwareResource::occupy(), and TraceCPU::ElasticDataGen::HardwareResource::release().

bool TraceCPU::ElasticDataGen::GraphNode::isStrictlyOrdered ( ) const

inline

Return true if node has a request which is strictly ordered.

Definition at line 671 of file trace_cpu.hh.

References flags, Flags< T >::isSet(), and Request::STRICT_ORDER.

Referenced by TraceCPU::ElasticDataGen::executeMemReq(), and TraceCPU::ElasticDataGen::HardwareResource::release().

bool TraceCPU::ElasticDataGen::GraphNode::removeDepOnInst ( NodeSeqNum done_seq_num )

Check for all dependencies on completed inst.

Definition at line 1429 of file trace_cpu.cc.

References M5_VAR_USED.

bool TraceCPU::ElasticDataGen::GraphNode::removeRegDep ( NodeSeqNum reg_dep )

Remove completed instruction from register dependency array.

Definition at line 1377 of file trace_cpu.cc.

References DPRINTFR.

bool TraceCPU::ElasticDataGen::GraphNode::removeRobDep ( NodeSeqNum rob_dep )

Remove completed instruction from order dependency array.

Definition at line 1396 of file trace_cpu.cc.

References DPRINTFR.

std::string TraceCPU::ElasticDataGen::GraphNode::typeToStr ( ) const

Return string specifying the type of the node.

Definition at line 1477 of file trace_cpu.cc.

References X86ISA::type.

Referenced by TraceCPU::ElasticDataGen::checkAndIssue().

void TraceCPU::ElasticDataGen::GraphNode::writeElementAsTrace ( ) const

Write out element in trace-compatible format using debug flag TraceCPUData.

Definition at line 1444 of file trace_cpu.cc.

References DPRINTFR, ArmISA::i, X86ISA::physAddr, and X86ISA::size().

Member Data Documentation

uint32_t TraceCPU::ElasticDataGen::GraphNode::asid

The address space id which is set if the virtual address is set.

Definition at line 610 of file trace_cpu.hh.

Referenced by TraceCPU::ElasticDataGen::executeMemReq(), and TraceCPU::ElasticDataGen::InputStream::read().

uint64_t TraceCPU::ElasticDataGen::GraphNode::compDelay

Computational delay.

Definition at line 628 of file trace_cpu.hh.

Referenced by TraceCPU::ElasticDataGen::checkAndIssue(), and TraceCPU::ElasticDataGen::InputStream::read().

std::vector<GraphNode *> TraceCPU::ElasticDataGen::GraphNode::dependents

A vector of nodes dependent (outgoing) on this node.

A sequential container is chosen because when dependents become free, they attempt to issue in program order.

Definition at line 644 of file trace_cpu.hh.

Request::Flags TraceCPU::ElasticDataGen::GraphNode::flags

Request flags if any.

Definition at line 616 of file trace_cpu.hh.

Referenced by TraceCPU::ElasticDataGen::executeMemReq(), isStrictlyOrdered(), and TraceCPU::ElasticDataGen::InputStream::read().

const uint8_t TraceCPU::ElasticDataGen::GraphNode::maxRobDep = 2

static

The maximum no.

of ROB dependencies. There can be at most 2 order dependencies which could exist for a store. For a load and comp node there can be at most one order dependency.

Definition at line 586 of file trace_cpu.hh.

Referenced by TraceCPU::ElasticDataGen::InputStream::read().

uint8_t TraceCPU::ElasticDataGen::GraphNode::numRegDep

Number of register dependencies.

Definition at line 637 of file trace_cpu.hh.

Referenced by TraceCPU::ElasticDataGen::checkAndIssue(), TraceCPU::ElasticDataGen::InputStream::read(), and TraceCPU::ElasticDataGen::readNextWindow().

uint8_t TraceCPU::ElasticDataGen::GraphNode::numRobDep

Number of order dependencies.

Definition at line 625 of file trace_cpu.hh.

Referenced by TraceCPU::ElasticDataGen::checkAndIssue(), TraceCPU::ElasticDataGen::InputStream::read(), and TraceCPU::ElasticDataGen::readNextWindow().

Addr TraceCPU::ElasticDataGen::GraphNode::pc

Instruction PC.